User manual QSC AUDIO KW SERIE

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Manual abstract: user guide QSC AUDIO KW SERIE

Detailed instructions for use are in the User's Guide.

[. . . ] KW Series User Manual KW122 ­ 75° 1000 W active 12" (300 mm) 2-way loudspeaker system KW152 ­ 60° 1000 W active 15" (380 mm) 2-way loudspeaker system KW153 ­ 75° 1000 W active 15" (380 mm) 3-way loudspeaker system KW181 ­ 18" (460 mm) 1000 W subwoofer system TD-000315-00-C *TD-000315-00* IMPORTANT SAFETY PRECAUTIONS AND EXPLANATION OF SYMBOLS WARNING! CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE THE AMPLIFIER COVER. REFER SERVICING TO QUALIFIED PERSONNEL. The lightning flash with the arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated "dangerous" voltage within the product's enclosure that may be of sufficient magnitude to constitute a risk of shock to humans. The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operation and maintenance (servicing) instructions in this manual. Install in accordance with QSC Audio Product's instructions and under the supervision of a licensed professional installation engineer. [. . . ] After a few seconds the red LIMIT LED and the green STBY LED extinguish, and the blue POWER LED illuminates. Rear POWER Indicator LED The blue POWER LED on the rear panel illuminates when: the AC mains are functioning properly, the AC mains power cord is connected properly, the POWER switch is in the ON position, and the unit is not in standby. The rear POWER LED extinguishes when the AC mains power cord has been removed from the loudspeaker or source, the POWER switch is in the off (not ON) position, or the amplifier enters standby. 10 If the rear POWER LED does not illuminate when the POWER switch is placed in the ON position during the first 5 minutes of power being applied, verify the AC mains power cord is properly attached to the loudspeaker and plugged into the AC source outlet. Verify the outlet is functioning properly. If the AC mains cord is serviceable and the AC mains outlet is operating properly, but the loudspeaker fails to operate, the loudspeaker may require servicing. Contact QSC's Technical Services department. System Power Sequencing Proper power-on/power-off sequencing can help prevent unexpected sounds from being produced by the system (pops, clicks, thumps). These unintended sounds can be unpleasant and take away from the overall professionalism of the presentation. Always follow the rule "speakers are last on, first off". Power-on Sequence: Bring the output level control of the mixer (or other audio source) feeding your speakers to its minimum position. Turn on all source devices (CD players, mixers, instruments), turn on subwoofer(s) then turn on the "top-boxes" (KW122, KW152, KW153). The level controls on your mixer may now be brought up. Power-off Sequence: Turn off "top boxes", turn off subwoofer(s), and then turn off all source devices. If a KW Series speaker is being driven from the output of another KW Series unit, it should be turned on after the unit feeding the audio signal, and turned off before the unit feeding the audio signal. EN Input Connections KW122, KW152, KW153 The KW122, KW152 and KW153 are designed to accept microphone-level and line-level inputs with several different connectors. There are three input connection points on the input panel. Channel A Mic/Line Input Combination XLR-M and ¼" Phone Jack 2. Channel B Line Input Combination XLR-M and ¼" Phone Jack 3. Channel A Mic Level Indicator ­ Yellow LED 4. Channel B Line Input Phono (RCA) Jacks 5. Channel A Signal Present Indicator ­ Green LED 7. Channel B Signal Present Indicator ­ Green LED 8. Channel B Gain 8 9 1 3 5 2 4 6 7 11 Channel A Channel A accepts either microphone or line level inputs. The MIC/LINE IN A inputs can use either a: · · Male XLR connector, or a Male 1/4" phone jack (TS or TRS type). The KW122, KW152, and KW153 feature a 4-position rotary switch (MIC/LINE GAIN) to provide input gain flexibility. · · · · 0 dB ­ Regular line level, no additional gain. [. . . ] · · · From the factory, the FRONT LED switch is set to the PWR position. The front LED illuminates brightly when the POWER switch is in the ON position. When the FRONT LED switch is in the OFF position, the front LED is not illuminated. This setting is recommended in applications where the front LED may be visually objectionable. [. . . ]

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